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Call it once at startup, then use the returned function in your framework's middleware\u002Fhook system.",[556,557,563],"pre",{"className":558,"code":559,"filename":560,"language":561,"meta":562,"style":562},"language-typescript shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","import { createAuthMiddleware } from 'evlog\u002Fbetter-auth'\n\nconst identify = createAuthMiddleware(auth, {\n  exclude: ['\u002Fapi\u002Fauth\u002F**', '\u002Fapi\u002Fpublic\u002F**'],\n  include: ['\u002Fapi\u002F**'],\n  maskEmail: true,\n})\n","server\u002Fmiddleware\u002Fauth-identify.ts","typescript","",[548,564,565,598,605,630,666,687,701],{"__ignoreMap":562},[566,567,570,574,578,582,585,588,591,595],"span",{"class":568,"line":569},"line",1,[566,571,573],{"class":572},"s7zQu","import",[566,575,577],{"class":576},"sMK4o"," {",[566,579,581],{"class":580},"sTEyZ"," createAuthMiddleware",[566,583,584],{"class":576}," }",[566,586,587],{"class":572}," from",[566,589,590],{"class":576}," '",[566,592,594],{"class":593},"sfazB","evlog\u002Fbetter-auth",[566,596,597],{"class":576},"'\n",[566,599,601],{"class":568,"line":600},2,[566,602,604],{"emptyLinePlaceholder":603},true,"\n",[566,606,608,612,615,618,621,624,627],{"class":568,"line":607},3,[566,609,611],{"class":610},"spNyl","const",[566,613,614],{"class":580}," identify ",[566,616,617],{"class":576},"=",[566,619,581],{"class":620},"s2Zo4",[566,622,623],{"class":580},"(auth",[566,625,626],{"class":576},",",[566,628,629],{"class":576}," {\n",[566,631,633,637,640,643,646,649,651,653,655,658,660,663],{"class":568,"line":632},4,[566,634,636],{"class":635},"swJcz","  exclude",[566,638,639],{"class":576},":",[566,641,642],{"class":580}," [",[566,644,645],{"class":576},"'",[566,647,648],{"class":593},"\u002Fapi\u002Fauth\u002F**",[566,650,645],{"class":576},[566,652,626],{"class":576},[566,654,590],{"class":576},[566,656,657],{"class":593},"\u002Fapi\u002Fpublic\u002F**",[566,659,645],{"class":576},[566,661,662],{"class":580},"]",[566,664,665],{"class":576},",\n",[566,667,669,672,674,676,678,681,683,685],{"class":568,"line":668},5,[566,670,671],{"class":635},"  include",[566,673,639],{"class":576},[566,675,642],{"class":580},[566,677,645],{"class":576},[566,679,680],{"class":593},"\u002Fapi\u002F**",[566,682,645],{"class":576},[566,684,662],{"class":580},[566,686,665],{"class":576},[566,688,690,693,695,699],{"class":568,"line":689},6,[566,691,692],{"class":635},"  maskEmail",[566,694,639],{"class":576},[566,696,698],{"class":697},"sfNiH"," true",[566,700,665],{"class":576},[566,702,704,707],{"class":568,"line":703},7,[566,705,706],{"class":576},"}",[566,708,709],{"class":580},")\n",[545,711,712,713,716,717,719,720,723],{},"The function signature is ",[548,714,715],{},"(log, headers, path?) => Promise\u003Cboolean>",". It resolves the session, calls ",[548,718,553],{},", captures timing into ",[548,721,722],{},"auth.resolvedIn",", fires lifecycle hooks, and silently catches errors so session resolution never breaks a request.",[725,726,336],"h2",{"id":727},"options",[545,729,730,731,738],{},"Inherits all ",[732,733,735,737],"a",{"href":734},"\u002Fuse-cases\u002Fbetter-auth\u002Fidentify-user#options",[548,736,553],{}," options",", plus:",[740,741,742,761],"table",{},[743,744,745],"thead",{},[746,747,748,752,755,758],"tr",{},[749,750,751],"th",{},"Option",[749,753,754],{},"Type",[749,756,757],{},"Default",[749,759,760],{},"Description",[762,763,764,785,804,823],"tbody",{},[746,765,766,772,777,782],{},[767,768,769],"td",{},[548,770,771],{},"exclude",[767,773,774],{},[548,775,776],{},"string[]",[767,778,779],{},[548,780,781],{},"['\u002Fapi\u002Fauth\u002F**']",[767,783,784],{},"Route patterns to skip (glob).",[746,786,787,792,796,801],{},[767,788,789],{},[548,790,791],{},"include",[767,793,794],{},[548,795,776],{},[767,797,798],{},[548,799,800],{},"undefined",[767,802,803],{},"If set, only matching routes are resolved.",[746,805,806,811,816,820],{},[767,807,808],{},[548,809,810],{},"onIdentify",[767,812,813],{},[548,814,815],{},"(log, session) => void",[767,817,818],{},[548,819,800],{},[767,821,822],{},"Called after successful identification.",[746,824,825,830,835,839],{},[767,826,827],{},[548,828,829],{},"onAnonymous",[767,831,832],{},[548,833,834],{},"(log) => void",[767,836,837],{},[548,838,800],{},[767,840,841],{},"Called when no session is found.",[725,843,845],{"id":844},"skip-the-routes-that-do-not-need-a-session","Skip the routes that do not need a session",[545,847,848],{},"Skip Better Auth's own routes and any public endpoints to avoid wasted database queries:",[556,850,852],{"className":558,"code":851,"language":561,"meta":562,"style":562},"const identify = createAuthMiddleware(auth, {\n  exclude: [\n    '\u002Fapi\u002Fauth\u002F**',     \u002F\u002F Better Auth itself\n    '\u002Fapi\u002Fpublic\u002F**',   \u002F\u002F Public endpoints\n    '\u002Fapi\u002Fhealth',      \u002F\u002F Health checks\n  ],\n})\n",[548,853,854,870,879,894,907,921,928],{"__ignoreMap":562},[566,855,856,858,860,862,864,866,868],{"class":568,"line":569},[566,857,611],{"class":610},[566,859,614],{"class":580},[566,861,617],{"class":576},[566,863,581],{"class":620},[566,865,623],{"class":580},[566,867,626],{"class":576},[566,869,629],{"class":576},[566,871,872,874,876],{"class":568,"line":600},[566,873,636],{"class":635},[566,875,639],{"class":576},[566,877,878],{"class":580}," [\n",[566,880,881,884,886,888,890],{"class":568,"line":607},[566,882,883],{"class":576},"    '",[566,885,648],{"class":593},[566,887,645],{"class":576},[566,889,626],{"class":576},[566,891,893],{"class":892},"sHwdD","     \u002F\u002F Better Auth itself\n",[566,895,896,898,900,902,904],{"class":568,"line":632},[566,897,883],{"class":576},[566,899,657],{"class":593},[566,901,645],{"class":576},[566,903,626],{"class":576},[566,905,906],{"class":892},"   \u002F\u002F Public endpoints\n",[566,908,909,911,914,916,918],{"class":568,"line":668},[566,910,883],{"class":576},[566,912,913],{"class":593},"\u002Fapi\u002Fhealth",[566,915,645],{"class":576},[566,917,626],{"class":576},[566,919,920],{"class":892},"      \u002F\u002F Health checks\n",[566,922,923,926],{"class":568,"line":689},[566,924,925],{"class":580},"  ]",[566,927,665],{"class":576},[566,929,930,932],{"class":568,"line":703},[566,931,706],{"class":576},[566,933,709],{"class":580},[545,935,936],{},"For high-traffic apps, flip the model and only resolve sessions on routes that need them:",[556,938,940],{"className":558,"code":939,"language":561,"meta":562,"style":562},"const identify = createAuthMiddleware(auth, {\n  include: ['\u002Fapi\u002Fdashboard\u002F**', '\u002Fapi\u002Faccount\u002F**'],\n})\n",[548,941,942,958,986],{"__ignoreMap":562},[566,943,944,946,948,950,952,954,956],{"class":568,"line":569},[566,945,611],{"class":610},[566,947,614],{"class":580},[566,949,617],{"class":576},[566,951,581],{"class":620},[566,953,623],{"class":580},[566,955,626],{"class":576},[566,957,629],{"class":576},[566,959,960,962,964,966,968,971,973,975,977,980,982,984],{"class":568,"line":600},[566,961,671],{"class":635},[566,963,639],{"class":576},[566,965,642],{"class":580},[566,967,645],{"class":576},[566,969,970],{"class":593},"\u002Fapi\u002Fdashboard\u002F**",[566,972,645],{"class":576},[566,974,626],{"class":576},[566,976,590],{"class":576},[566,978,979],{"class":593},"\u002Fapi\u002Faccount\u002F**",[566,981,645],{"class":576},[566,983,662],{"class":580},[566,985,665],{"class":576},[566,987,988,990],{"class":568,"line":607},[566,989,706],{"class":576},[566,991,709],{"class":580},[545,993,994,996,997,999,1000,1003,1004,1007,1008,1010,1011,1013],{},[548,995,791],{}," and ",[548,998,771],{}," use glob patterns (",[548,1001,1002],{},"*",", ",[548,1005,1006],{},"**","). 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They run on every request that passes the ",[548,1206,791],{},"\u002F",[548,1209,771],{}," filter, so keep them fast and side-effect-free.",[1212,1213,1214,1219],"tip",{},[545,1215,1216,1217,639],{},"Common patterns for ",[548,1218,810],{},[1220,1221,1222,1226,1229],"ul",{},[1223,1224,1225],"li",{},"Force-keep audit logs for admins or high-value plans.",[1223,1227,1228],{},"Tag the request with feature flags or tenant info loaded from the session.",[1223,1230,1231],{},"Increment a per-user counter for billing.",[725,1233,1235],{"id":1234},"what-happens-when-auth-fails","What happens when auth fails",[545,1237,1238,1239,1242,1243,996,1245,1248],{},"The middleware catches every error from ",[548,1240,1241],{},"getSession"," and logs nothing, so your request keeps flowing whether the auth backend is up or down. The wide event still includes ",[548,1244,722],{},[548,1246,1247],{},"auth.identified: false"," so you can alert on session resolution health from your dashboards.",[1250,1251,1252],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .sfNiH, html code.shiki .sfNiH{--shiki-light:#FF5370;--shiki-default:#FF9CAC;--shiki-dark:#FF9CAC}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}",{"title":562,"searchDepth":600,"depth":600,"links":1254},[1255,1256,1257,1258],{"id":727,"depth":600,"text":336},{"id":844,"depth":600,"text":845},{"id":1016,"depth":600,"text":1017},{"id":1234,"depth":600,"text":1235},"Framework-agnostic factory with route filtering, session timing, and lifecycle hooks. Call it once at startup and reuse across requests.","md",[1262,1265],{"label":360,"icon":363,"to":361,"color":1263,"variant":1264},"neutral","subtle",{"label":374,"icon":107,"to":375,"color":1263,"variant":1264},{},{"title":365,"icon":368},{"title":540,"description":1259},"W5iPJDKIMXykmBxrqRGnyCbSUGNKZLZjNw0Sw3TEzU0",[1271,1273],{"title":360,"path":361,"stem":362,"description":1272,"icon":363,"children":-1},"The core building block — extract safe user fields, mask emails, and capture plugin data (organizations, roles, 2FA) from a Better Auth session.",{"title":370,"path":371,"stem":372,"description":1274,"icon":320,"children":-1},"Mirror the server-side user identity into client-side logs by watching the Better Auth session and calling setIdentity.",1786817429270]